31312112002 has 24 divisors (see below), whose sum is σ = 49790704320. Its totient is φ = 14764401960.

The previous prime is 31312111981. The next prime is 31312112053. The reversal of 31312112002 is 20021121313.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133302 + ... + 283537.

It is an arithmetic number, because the mean of its divisors is an integer number (2074612680).

Almost surely, 2^31312112002 is an apocalyptic number.

31312112002 is a deficient number, since it is larger than the sum of its proper divisors (18478592318).

31312112002 is a wasteful number, since it uses less digits than its factorization.

31312112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416958 (or 416935 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31312112002 its reverse (20021121313), we get a palindrome (51333233315).

The spelling of 31312112002 in words is "thirty-one billion, three hundred twelve million, one hundred twelve thousand, two".